const path = require('path');

function resolve(dir) {
  return path.join(__dirname, dir);
}

const defaultSettings = require('./src/settings.js');

const name = defaultSettings.title; // 网站标题

const target = defaultSettings.target; // 接口域名

const skyUrl = defaultSettings.skyUrl; //埋点接口地址

const port = process.env.port || process.env.npm_config_port || 9527; // dev port

// const port = process.env.port || process.env.npm_config_port || 9527 // dev port

// All configuration item explanations can be find in https://cli.vuejs.org/config/
module.exports = {
  /**
   * You will need to set publicPath if you plan to deploy your site under a sub path,
   * for example GitHub Pages. If you plan to deploy your site to https://foo.github.io/bar/,
   * then publicPath should be set to "/bar/".
   * In most cases please use '/' !!!
   * Detail: https://cli.vuejs.org/config/#publicpath
   */
  publicPath: '/',
  outputDir: 'dist',
  assetsDir: 'static',
  lintOnSave: true,
  productionSourceMap: false,
  devServer: {
    host: '0.0.0.0',
    port: port,
    open: true,
    overlay: {
      warnings: false,
      errors: false
    },
    proxy: {
      '/api': {
        // target: 'http://10.169.112.41:8099', // 后台接口域名
        target: target,
        // target:'http://10.1.10.146:9528',
        ws: true, // 如果要代理 websockets，配置这个参数
        secure: false, // 如果是https接口，需要配置这个参数
        changeOrigin: true // 是否跨域
      },
      '/sky': {
        target: skyUrl,
        pathRewrite: { '^/sky': '' },
        ws: true, // 如果要代理 websockets，配置这个参数
        secure: false, // 如果是https接口，需要配置这个参数
        changeOrigin: true // 是否跨域
      }
    }
    // proxy: 'http://10.1.10.7:30900/mock/726',
    // proxy: 'http://10.1.10.152:8888/api',
  },
  configureWebpack: {
    name: name,
    resolve: {
      alias: {
        '@': resolve('src')
      }
    }
  },
  chainWebpack(config) {
    // it can improve the speed of the first screen, it is recommended to turn on preload
    // it can improve the speed of the first screen, it is recommended to turn on preload
    config.plugin('preload').tap(() => [
      {
        rel: 'preload',
        // to ignore runtime.js
        // https://github.com/vuejs/vue-cli/blob/dev/packages/@vue/cli-service/lib/config/app.js#L171
        fileBlacklist: [/\.map$/, /hot-update\.js$/, /runtime\..*\.js$/],
        include: 'initial'
      }
    ]);

    // when there are many pages, it will cause too many meaningless requests
    config.plugins['delete']('prefetch');

    // set svg-sprite-loader
    config.module.rule('svg').exclude.add(resolve('src/icons')).end();
    config.module
      .rule('icons')
      .test(/\.svg$/)
      .include.add(resolve('src/icons'))
      .end()
      .use('svg-sprite-loader')
      .loader('svg-sprite-loader')
      .options({
        symbolId: 'icon-[name]'
      })
      .end();

    // eslint-disable-next-line no-shadow
    config.when(process.env.NODE_ENV !== 'development', (config) => {
      config
        .plugin('ScriptExtHtmlWebpackPlugin')
        .after('html')
        .use('script-ext-html-webpack-plugin', [
          {
            // `runtime` must same as runtimeChunk name. default is `runtime`
            inline: /runtime\..*\.js$/
          }
        ])
        .end();
      config.optimization.splitChunks({
        chunks: 'all',
        cacheGroups: {
          libs: {
            name: 'chunk-libs',
            test: /[\\/]node_modules[\\/]/,
            priority: 10,
            chunks: 'initial' // only package third parties that are initially dependent
          },
          elementUI: {
            name: 'chunk-elementUI', // split elementUI into a single package
            priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
            test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
          },
          commons: {
            name: 'chunk-commons',
            test: resolve('src/components'), // can customize your rules
            minChunks: 3, //  minimum common number
            priority: 5,
            reuseExistingChunk: true
          }
        }
      });
      // https:// webpack.js.org/configuration/optimization/#optimizationruntimechunk
      config.optimization.runtimeChunk('single');
    });
  }
};
